The human-centered robotic systems demand safe and robust controllers in many applications. This paper proposes an adaptive proxy-based sliding mode control approach for a class of typical second-order nonlinear systems. A new PID-type virtual coupling is designed between a virtual proxy and the physical object. Considering the unknown bound of lumped disturbances, an adaptation law is applied to online adjust the gain of a sign function which ensures the proxy to track the reference accurately. By using the Lyapunov theorem, the closed-loop system stability is proved. Both simulations and experiments are conducted to verify the proposed method based on a real-world pneumatic muscle actuator control platform. The results show that the proposed adaptive proxy-based sliding mode control approach presents better tracking accuracy, safety, and robustness than the conventional PID control and sliding mode control.Emergency Department Thoracotomy (EDRT) after traumatic Cardio-pulmonary Arrest (CPR) can be used to salvage select critically injured patients. Indications of this surgical procedure are widely debated and changed during last decades. https://www.selleckchem.com/products/agomelatine-hydrochloride.html We provide the available literature about EDRT in the effort to provide a comprehensive synthesis about the procedure, likelihood of success and patient's outcome in the different clinical setting, accepted indications and technical details adopted during the procedure for different trauma injuries.
Literature from 1975 to 2020 was retrieved from multiple databases and reviewed. Indications, contraindications, total number and outcome of patients submitted to EDRT were primary endpoints.
A total number of 7236 patients received EDRT, but only 7.8% survived. Penetrating trauma and witnessed cardiopulmonary arrest with the presence of vital signs at the trauma center are the most favorable conditions to perform EDRT.
EDRT should be reserved for acute resuscitation of selected dying trauma patient. Risks of futility, costs, benefits of the surgical procedure should be carefully evaluated before performing the surgical procedure.
EDRT should be reserved for acute resuscitation of selected dying trauma patient. Risks of futility, costs, benefits of the surgical procedure should be carefully evaluated before performing the surgical procedure.Academic institutions have increasingly focused on educating physicians and surgeons in concepts of value-based care, including quality improvement (QI). The extent to which QI curricular competencies are addressed in specialty surgical residency training is unclear.
A survey instrument was developed by content experts and sent to Vascular Surgery and Urology residents electronically. Descriptive statistics and bivariate associations were calculated using StataMP 13.1.
Vascular Surgery and Urology residents reported exposure to similar types of QI curriculum. Fewer than half of residents reported achieving targets for graduation (Vascular 31%, Urology 42%) related to QI, and few residents in either group felt very well-prepared to lead a QI initiative (Vascular 13%, Urology 8%).
QI education in surgical specialty training amongst Vascular Surgery and Urology residencies is similar and insufficient. Surgical specialties may benefit from collaborative efforts to improve the quality of QI education.
QI education in surgical specialty training amongst Vascular Surgery and Urology residencies is similar and insufficient. Surgical specialties may benefit from collaborative efforts to improve the quality of QI education.To evaluate the efficacy and safety of ultra-low dose (100mg) rituximab (RTX) administration in anti-melanoma differentiation-associated gene 5 (MDA5) positive patients with polymyositis/dermatomyositis (PM/DM) associated interstitial lung disease.
This retrospective study included anti-MDA5 antibody positive ILD subjects in the First Affiliated Hospital of Guangzhou Medical University from November 2017 to March 2019. Independent predictors for 180-day mortality were measured by Cox regression analysis. Patients were divided into 3 groups Group 1 (non-cyclophosphamide (CTX)/RTX) (n=10), Group 2 (CTX only) (n=19) and Group 3 (RTX with/without CTX) (n=11). The 180-day mortality was compared among 3 groups with Kaplan-Meier analysis. Post-RTX serological parameters as well as adverse events were evaluated.
Forty patients were included with the mean age of 51.3 years. Elevated IL-10 level and CD4/8ratio were considered as risk factors of 180-day mortality. Kaplan-Meier analysis showed a trend toward decrease, albeit non-significant, in 180-day mortality in Group 3 (P=0.26). The administration of 100mg RTX brought down B cell within 7 days that lasted for 180 days. There were 7 and 6 infection events observed within 2 months of CTX/RTX treatment in Group 2 and 3, with 5 and 2 fatal cases respectively. Cytomegalovirus infection accounted for half infection events in Group 3.
We found a pronounced and prolonged B cell depletion following 100mg RTX infusion and RTX add-on may be effective in anti-MDA5 positive ILD patients. However, infection, especially opportunistic infection, should be concerned during the treatment.
We found a pronounced and prolonged B cell depletion following 100 mg RTX infusion and RTX add-on may be effective in anti-MDA5 positive ILD patients. However, infection, especially opportunistic infection, should be concerned during the treatment.Arterial involvement in Behcet's disease is rare and the tibioperoneal trunk localisation is exceptional. We report the case of a young men with Behcet's disease and in whom the evolution to angiobehcet was unusual. The medical treatment and the therapeutic abstention were decided according to a bundle of argument.To explore the acceptability, consistency, and accuracy of eliciting health state utility values using discrete choice experiment (DCE) and DCE with life duration dimension (DCE) as compared with conventional time trade-off (TTO) by using the SF-6Dv2.
During face-to-face interviews, a representative sample of the general population in Tianjin, China, completed 8 TTO tasks and 10 DCE/DCEtasks, with the order of TTO and DCE/DCEbeing randomized. The fixed-effect model and conditional logit models were used for TTO and DCEs data estimation, respectively. Acceptability was assessed by self-reported difficulties in understanding/answering. Consistency was observed by the monotonicity of model coefficients. Accuracy was evaluated by investigating differences between observed and predicted TTO values using intraclass correlation coefficient, mean absolute difference, and root mean square difference.
A total of 503 respondents (53.7% male; range, 18-86 years) were included, with comparable characteristics between respondents who completed DCE (N= 252) and DCE(N= 251).